Scenarios, barriers to adoption, needs

Add user stories, scenarios, "needs", barriers to adoption etc below

• Need a GUI for Pandoc (or a similar tool)
  • (For pandoc or for writing scholarly?) Might be more useful initially to interface the various editors where people would write md with pandoc via plugins, that a separate GUI to run Pandoc)
• Need a screencast
• Starter templates with useful defaults for academic papers (turning on line numbering, double-spacing, etc via a review option; better initial geometry; etc)